The thesis is a study of the use of models in science and theology, particularly those concerned in the various concepts of creation. After a brief review of the philosophical background which looks at models of science, the discussion begins with the understanding and use of models in science. These are defined, their functions and applications are classified and the limitations are noted. It is then shown how the language of models is at the present time used much more widely and includes its use in theology. The relationship of this to metaphor, analogy and symbol is briefly discussed. The study continues with the understanding and use of mode...